Highly selective Backlog Qs for JEE MainChemistryGeneral Organic Chemistry
The order of basicity among the following compounds is
Options
- AII > I > IV > III  
- BIV > II > III > I
- CIV > I > II > III .
- DI > IV > II > III
Correct answer
D. I > IV > II > III
Step-by-step solution
I > IV > II > III (I) Conjugated acid has three equivalent canonical forms ( 3 lone pair of electrons on each N -atom). (IV) Conjugated acid has two equivalent canonical forms ( 2 lone pair of electrons on each N - atom). (II) ( 2 lone pair of electrons on each N -atom, not in resonance). (III) Conjugated acid has two equivalent canonical forms ( 2 lone pair of electrons on each N -atom, but in resonance).